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Currents and Sub-currents in the River of Innovations - Explaining Innovativeness using New-Product Announcements

Dolfsma, Wilfred; van der Panne, G. - Erasmus Research Institute of Management (ERIM), … - 2006

In their seminal paper, Acs and Audretsch (1988) analyze innovation patterns across industries and identify several … innovation; industries characterized by increased shares of skilled labor and large firms provide favorable conditions for … innovation. By analyzing a new and more consciously compiled database, we re-examine their original claims. Our results largely …

Persistent link: https://www.econbiz.de/10010731228

Appropriability in Services

Dolfsma, Wilfred - Erasmus Research Institute of Management (ERIM), … - 2005

paper I take a closer look at one aspect of innovation in services: appropriability. I discuss the different elements that …

Persistent link: https://www.econbiz.de/10010837550

The Process of New Service Development: issues of formilization and appropriability

Dolfsma, Wilfred - Erasmus Research Institute of Management (ERIM), … - 2004

Services form an important part of the economy today. Innovation for service firms is as important as for manufacturing …, but the innovation process for service firms is comparatively little studied. In this paper, I review the literature there … is on the innovation process for service firms, and make two suggestions for formalizing that process. The common thought …

Persistent link: https://www.econbiz.de/10010731080

Rostering at a Dutch Security Firm

Freling, Freling, R.; Piersma, N.; Wagelmans, … - Erasmus Research Institute of Management (ERIM), … - 2001

The roster planning process at the Dutch security firm NVD was traditionally carried out by hand. A few years NVD was traditionally carried out by hand. A few years ago, because of changing labor laws in the Netherlands, this became practically impossible. We developed a decision support system...

Persistent link: https://www.econbiz.de/10010730883

Effective algorithms for integrated scheduling of handling equipment at automated container terminals

Meersmans, P.J.M.; Wagelmans, Wagelmans, A.P.M. - Erasmus Research Institute of Management (ERIM), … - 2001

In this paper we consider the problem of integrated scheduling of various types of handling equipment at an automated container terminal, where the objective is to minimize the makespan of the schedule. We present a Branch & Bound algorithm that uses various combinatorial lower bounds....

Persistent link: https://www.econbiz.de/10010730890

Optimal Redesign of the Dutch Road Network

Snelder, M.; Wagelmans, Wagelmans, A.P.M.; Schrijver, J.M. - Erasmus Research Institute of Management (ERIM), … - 2005

The Dutch national road network has been developed over several decades. In the past, roads were constructed according to the then current spatial and transportation planning philosophies. Because the existing road network is a result of a long process of successive developments, the question...

Persistent link: https://www.econbiz.de/10010730958

Applying an Integrated Approach to Vehicle and Crew Scheduling in Practice

Huisman, Dennis; Freling, Freling, R.; Wagelmans, … - Erasmus Research Institute of Management (ERIM), … - 2000

This paper deals with a practical application of an integrated approach to vehicle and crew scheduling, that we have developed previously. Computational results have shown that our approach can be applied to problems of practical size. However, application of the approach to the actual problems...

Persistent link: https://www.econbiz.de/10010731125

A decision support system for crew planning in passenger transportation using a flexible branch-and-price algorithm

Freling, Freling, R.; Lentink, Lentink, R.M.; … - Erasmus Research Institute of Management (ERIM), … - 2001

This paper discusses a decision support system for airline and railway crew planning. The system is a state-of-the-art branch-and-price solver that is used for crew scheduling and crew rostering. We briefly discuss the mathematical background of the solver, of which most part is covered in the...

Persistent link: https://www.econbiz.de/10010731377

A Note on Ending Inventory Valuation in Multiperiod Production Scheduling

van den Heuvel, Wilco; Wagelmans, Wagelmans, A.P.M. - Erasmus Research Institute of Management (ERIM), … - 2002

In a recent paper, Fisher et al. (2001) present a method to mitigate end-effects in lot sizing byincluding a valuation term for end-of-horizon inventory in the objective function of the short-horizon model. Computational tests show that the proposed method outperforms the Wagner-Whitin algorithm...

Persistent link: https://www.econbiz.de/10010731382

Dynamic Scheduling of Handling Equipment at Automated Container Terminals

Meersmans, P.J.M.; Wagelmans, Wagelmans, A.P.M. - Erasmus Research Institute of Management (ERIM), … - 2001

In this paper we consider the problem of integrated scheduling of various types of handling equipment at an automated container terminal in a dynamic environment. This means that the handling times are not known exactly beforehand and that the order in which the different pieces of equipment...

Persistent link: https://www.econbiz.de/10010731448